A highly active two six-membered phosphinite palladium PCP pincer complex [PdCl{C6H3(CH2OPPri)2-2,6}]

Polyhedron ◽  
2007 ◽  
Vol 26 (7) ◽  
pp. 1445-1448 ◽  
Author(s):  
Ali Naghipour ◽  
S.J. Sabounchei ◽  
David Morales-Morales ◽  
Daniel Canseco-González ◽  
Craig M. Jensen

2020 ◽  
Author(s):  
Joel D. Smith ◽  
George Durrant ◽  
Daniel Ess ◽  
Warren Piers

<div>The synthesis and characterization of an iridium polyhydride complex (Ir-H4)</div><div>supported by an electron-rich PCP framework is described. This complex readily loses molecular</div><div>hydrogen allowing for rapid room temperature hydrogen isotope exchange (HIE) at the hydridic</div><div>positions and the α-C-H site of the ligand with deuterated solvents such as benzene-d6, toluene-d8</div><div>and THF-d8. The removal of 1-2 equivalents of molecular H2 forms unsaturated iridium carbene</div><div>trihydride (Ir-H3) or monohydride (Ir-H) compounds that are able to create further unsaturation</div><div>by reversibly transferring a hydride to the ligand carbene carbon. These species are highly active</div><div>hydrogen isotope exchange (HIE) catalysts using C6D6 or D2O as deuterium sources for the</div><div>deuteration of a variety of substrates. By modifying conditions to influence the Ir-Hn speciation,</div><div>deuteration levels can range from near exhaustive to selective only for sterically accessible sites.</div><div>Preparative level deuterations of select substrates were performed allowing for procurement of</div><div>>95% deuterated compounds in excellent isolated yields; the catalyst can be regenerated by</div><div>treatment of residues with H2 and is still active for further reactions.</div>



2018 ◽  
Vol 37 (20) ◽  
pp. 3475-3479 ◽  
Author(s):  
Daniel Himmelbauer ◽  
Berthold Stöger ◽  
Luis F. Veiros ◽  
Karl Kirchner
Keyword(s):  


2006 ◽  
Vol 47 (29) ◽  
pp. 5059-5062 ◽  
Author(s):  
Valente Gómez-Benítez ◽  
Oscar Baldovino-Pantaleón ◽  
Cesar Herrera-Álvarez ◽  
Rubén A. Toscano ◽  
David Morales-Morales
Keyword(s):  


ChemInform ◽  
2000 ◽  
Vol 31 (48) ◽  
pp. no-no
Author(s):  
David Morales-Morales ◽  
Rocio Redon ◽  
Cathleen Yung ◽  
Craig M. Jensen


2014 ◽  
Vol 43 (32) ◽  
pp. 12187-12199 ◽  
Author(s):  
Wolfgang Leis ◽  
Sophie Wernitz ◽  
Benedikt Reichart ◽  
David Ruckerbauer ◽  
Johannes Wolfram Wielandt ◽  
...  

Chemical conversions of a cycloheptatriene iridium pincer complex were studied by NMR and MS techniques as well as DFT calculations.



2002 ◽  
Vol 189 (1) ◽  
pp. 119-124 ◽  
Author(s):  
Xue-Qin Gu ◽  
Wei Chen ◽  
David Morales-Morales ◽  
Craig M. Jensen


2019 ◽  
Vol 21 (9) ◽  
pp. 3142-3147 ◽  
Author(s):  
Leonard Homberg ◽  
Alexander Roller ◽  
Kai C. Hultzsch


Synthesis ◽  
2019 ◽  
Vol 51 (20) ◽  
pp. 3792-3795 ◽  
Author(s):  
Yuya Ashida ◽  
Shoichi Kondo ◽  
Kazuya Arashiba ◽  
Takamasa Kikuchi ◽  
Kazunari Nakajima ◽  
...  

A practical method for ammonia synthesis is described. The reaction of atmospheric pressure of nitrogen gas with samarium diiodide as a reducing reagent and water as a proton source in the presence of a catalytic amount of a molybdenum trichloride complex bearing a PCP [1,3-bis(di-tert-butylphosphinomethyl)benzimidazol-2-ylidene]-type pincer ligand occurs under ambient conditions to afford ammonium sulfate after treatment with sulfuric acid.



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